RX-8 Drivers,

Epitroch is still in business with an updated website too. 2024 was a busy year for me due to aging parents and a killer day job. My apologies for late replies.

If you drive a Series I RX-8 and need a Sohn adapter and/or installation kit, please visit www.epitroch.com for information on the system and how to order one.

Thank you!

Dan
Epitroch LLC
dan@epitroch.com

 

Thanks Dan, you're still a trusted and supportive part of the community.

 

It's been 15+ years since I was on this site with my '05 (sold). It ran beautifully without a Sohn through 60k miles when it was sold. I recently acquired a mint '07 with only 14k miles. It'll be a low-milage, weekend garage queen. I've read some reporting the Sohn as an absolute necessity, others dismissing it. The story isn't clear to me. Can someone objectively help me understand the pro's/con's ?

Are the installation instructions published anywhere?

 

I have my 2nd 8 (04 GT) running with a Sohn Adapter for that extra measure of protection. The only age she shows is a cracking Airbag cover.
She is a Weekend/fair weather Queen as well, but I still drive it like it was stolen. Epitroch supplies all instructions for the install.

 

But what are the pro's/con's of installation? Why is this a perceived necessity for reliability? I'll never put more than 20k miles on my car in the next 15 years.

 

There's a step by step guide in the DIY section.

The story isn't clear like many other things about rotary maintenance, we don't have a lab and thousands of cars to track. But you shouldn't make this decision in a vacuum, it relates to other parts of the maintenance strategy. I use one because I want to run expensive synthetic oil for the bearings and I don't want to burn liters per track day of it. I also run long oil change intervals. You don't have to do those things, especially if not racing. Plenty of engines lived a long time without a Sohn, and modern oils are better all around than what was around when the RX8 was designed, so it's not a must. 2009+ cars can't have one at all and they're no more or less reliable than the early models.

 

Thanks, Loki. Copy.

Pretty cool to still see you here. I was just perusing our posts to this forum from '06/'08 when I had my last RX-8, an '05 GT. I loved that car! I bought this '07 two years ago on a sentimental impulse. It's been pickled since. I'm finally getting the bug to play with it. It's fun to revisit old posts to remind myself of the thought process and mod's that made that '05 so satisfying. In hindsight, my only regret was the noisy MS CAI. Otherwise, MS/Koni/RB' suspension, short-shift and rotor/pad mods made that one a dream. Debating how far to take this one. Somehow, the '07 feels stiffer out of the box.

 

Great observation/explanation, thanks for the additional insight.
The install is pretty straightforward if you've ever had to get to your engine hoses, SSV and Thermostat. I have large hands and due to this, those Solenoid Valves between the Intake Manifold and firewall are more difficult to get to than the Sohn install.

Also, good to see some of the guys still around...

 

Chiming in with my experience similar to Loki, running thicker synthetic in the pan and it's served me well for years now. It's also nice having an easy visual of oil consumption to top it off quick. I run the increased oil injection tables and like to keep an eye on it between lapping sessions, it's great for that.

 

Hi Dan,
glad to hear you're still in business. I've sent you a couple of emails to order a kit but never heard back from you.
I'd appreciate it if i could still get a set.

Best,
Chris

 

Hi Dan, I've sent you a couple of emails for an order to me in Australia. Hope to hear from you soon!

 

Hi Dan,
I have recently emailed you an order as well. If and when you have time, I am definitely interested in purchasing.
Thank you,
Michael

 

been trying to buy this kit for my rx8 because I can’t find another anywhere else and have gotten no response. Any reason as to why?

 

Isn't the answer in the first post?

Consider this as an alternative: https://www.usplastic.com/catalog/it...2934&catid=934
Some old threads on that bottle if you want to search for them.

 

Hey; are you still taking orders?